Generic Radiation Worker Training Supplemental Worker Certification Practice Test 2026 - Free Radiation Worker Practice Questions and Study Guide

Ionizing radiation is the energy or particles from radioactive materials that can harm living tissue by altering chemical or physical structures. It has enough energy to knock electrons off atoms, creating ions, which can break chemical bonds and damage DNA. That potential to cause chemical changes is why these emissions are dangerous to tissue. Examples include alpha particles, beta particles, and gamma rays, all of which are forms of ionizing radiation. Non-ionizing radiation, by contrast, doesn’t have enough energy to ionize atoms, so it doesn’t fit the description.